IDACORP, Inc. is a holding company whose principal operating subsidiary is Idaho Power, an electric utility engaged in the generation, transmission, distribution, sale, and purchase of electric energy and capacity. Idaho Power serves approximately 664,000 retail customers in southern Idaho and eastern Oregon as of December 31, 2025, covering a service area of about 24,000 square miles with an estimated population of 1.4 million. The company is regulated by the Idaho Public…
IDACORP, Inc. is a holding company whose principal operating subsidiary is Idaho Power, an electric utility engaged in the generation, transmission, distribution, sale, and purchase of electric energy and capacity. Idaho Power serves approximately 664,000 retail customers in southern Idaho and eastern Oregon as of December 31, 2025, covering a service area of about 24,000 square miles with an estimated population of 1.4 million. The company is regulated by the Idaho Public Utilities Commission, the Oregon Public Utility Commission, and the Federal Energy Regulatory Commission. IDACORP’s other notable subsidiaries include IFS, which invests in affordable housing and real estate tax credit projects, and Ida-West, an operator of small PURPA-qualifying hydropower generation projects. Idaho Power's utility operations constitute nearly all of IDACORP's current business activities.
IDACORP generates revenue primarily through Idaho Power's sale of electricity to retail and wholesale customers and the provision of transmission service. Retail revenues are derived from residential, commercial, industrial, and irrigation customer classes, with residential sales making up the largest share. Wholesale energy sales occur when Idaho Power sells excess generation into the market, while transmission wheeling-related revenues come from providing transmission services under its FERC-approved Open Access Transmission Tariff. Additional revenue streams include energy efficiency program revenues and other miscellaneous sources. In 2025, total electric utility operating revenues reached $1,809,609,000, driven largely by retail energy sales which totaled 16,177,000 MWh. The company also benefits from long-term power purchase agreements and participates in the Western Energy Imbalance Market to optimize generation and purchasing decisions.
The company operates through the following segments:
- Idaho Power: This segment encompasses the generation, transmission, distribution, sale, and purchase of electric energy and capacity. Idaho Power operates 17 hydropower projects on the Snake River and its tributaries with a total nameplate capacity of 1,818 MW. It also co-owns the Jim Bridger and North Valmy thermal plants and owns natural gas-fired plants including Langley Gulch, Danskin, and Bennett Mountain. The segment serves retail customers in southern Idaho and eastern Oregon and participates in wholesale energy and transmission markets.
- IFS: IDACORP Financial Services, Inc. invests in real estate tax credit projects, such as affordable housing developments, which generate returns through federal and state tax credits and accelerated tax depreciation benefits. At December 31, 2025, the unamortized amount of IFS’s portfolio was approximately $50 million. IFS generated tax credits of $7.8 million in 2025 and received distributions that reduced IDACORP's income tax expense by $0.7 million in the same year.
- Ida-West: Ida-West Energy Company operates and has a 50 percent ownership interest in nine hydropower projects with a total nameplate capacity of 44 MW. Four of these projects are located in Idaho and five are in northern California. All nine projects are qualifying facilities under PURPA, and Idaho Power purchases all of the power generated by Ida-West’s four Idaho hydropower projects. In 2025, Idaho Power paid approximately $9 million for this power.
IDACORP, through its Idaho Power subsidiary, holds a regulated monopoly position in its service area for the delivery of electricity, though it faces competition from alternative energy sources and fuel providers. The company competes with natural gas providers for space and water heating applications and is impacted by customer-owned solar and other distributed generation systems that can reduce demand for its electricity. Idaho Power differentiates itself through its diversified generation portfolio, which includes hydropower, thermal, and natural gas resources, and its active participation in regional energy markets like the Western EIM. Its long-term resource planning and investments in transmission infrastructure such as the Boardman-to-Hemingway and Southwest Intertie Project-North enhance its ability to integrate renewable energy and maintain grid reliability.
Idaho Power provides electric utility service to approximately 561,000 residential customers, along with commercial and industrial clients in food processing, electronics, general manufacturing, agriculture, health care, government, education, and information technology. The company also serves irrigation customers who use electricity to operate irrigation pumps during the agricultural growing season. While specific large customer names are not disclosed in the filing, the utility's customer base spans municipal, cooperative, and institutional entities across its 24,000-square-mile service area in Idaho and Oregon. Idaho Power holds franchises in 69 cities in Idaho and 9 cities in Oregon and has certificates to serve all or part of 25 counties in Idaho and 3 counties in Oregon.